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Posted by on Tuesday, May 18, 2010 at 10:17pm.

I need help with finding the amplitude, period, and the interval.
y=4-3cos(x-pi)

  • trig - , Tuesday, May 18, 2010 at 11:31pm

    The amplitude is 3.
    The x interval between maxima is 2 pi.

    It makes no sense to talk about a time period, since there is no t in the equation. Did you leave it out by mistake?

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